to collect;  to gather;  to save;  to accumulate;  to pile up
 air;  atmosphere;  mood;  situation;  someone with no presence;  someone who doesn't stand out at all
 lukewarm;  tepid;  half-hearted;  vague;  lenient;  mild
 geothermal energy;  terrestrial heat
 seems;  I think;  I guess;  don't you agree?;  I thought you'd say that!
 heat;  fever;  temperature;  zeal;  passion
 if;  in case;  as for;  on the topic of;  if that's the case;  if so
 main cause;  primary factor
 be supposed or expected to (do);  be sure to (do);  ought to (do)
 to leave (behind);  to leave (undone);  to not finish;  to save;  to set aside;  to leave (to someone, esp. after one's death)
 potentiality;  likelihood;  possibility;  availability
 one;  for one thing;  only;  (not) even;  just (e.g. "just try it");  some kind of;  one type of
 as expected;  sure enough;  after all (is said and done);  in the end;  too;  also
 here;  this place;  this point;  here;  these past ... (e.g. three years);  these last ...
 expectation;  anticipation;  hope;  promising;  rising;  up-and-coming
 to expand;  to swell (out);  to get big;  to become inflated
 while;  even though;  despite
 whole;  entirety;  whatever (is the matter)
 to incline toward;  to slant;  to lurch;  to go down (sun);  to wane;  to sink
 gradually;  steadily;  slowly;  little by little;  step by step;  by degrees
 to face;  to go towards;  to head towards
 confirmation;  verification;  validation;  review;  check;  affirmation
 careful;  cautious;  prudent;  discreet;  deliberate
 to descend;  to go down;  to be handed down (of an order, judgment, etc.);  to pass (of time);  to surrender;  to capitulate;  to be less than
 inclination;  slant;  slope;  bevel;  list;  dip
 tough;  hard;  determined;  strong-minded;  strong (e.g. sunlight, alcohol);  severe
 cliff;  precipice;  precipice;  brink of a dangerous situation
 nature;  natural;  spontaneous;  naturally;  spontaneously
 to be mixed;  to be blended with;  to associate with;  to mingle with;  to join
 to touch;  to feel;  to touch (with);  to experience;  to come in contact with;  to touch on (a subject);  to allude to
 the more ... the more ...;  as; (arch.)  while; (arch.)  during; (arch.)  because; (arch.)  since
 lower back;  waist;  hips;  body (of hair, noodle, paper, etc.);  resilience;  spring
 to drop;  to lose;  to clean off (dirt, makeup, paint, etc.);  to remove (e.g. stains or facial hair);  to lose (a match);  to reject (an applicant);  to lower (e.g. shoulders or voice)
 ceiling;  ceiling price;  (price) ceiling
 to get twisted;  to get crooked;  to become twisted (of a mind, relationship, etc.);  to become warped;  to become troubled;  to become complicated
 stairs;  stairway;  staircase
 to be buried;  to be covered;  to be hidden
 usual;  ordinary;  normal;  regular;  general;  common
 leaving as is;  leaving alone;  leaving to chance;  neglecting;  abandoning